Efficient mortar plasticizer base material and its efficient mortar plasticizer composition

Abstract

This invention relates to a basic material of a high efficient mortar DBP to be prepared by the following method: a, adding 11-14% rosin polymers into 45-55% water of 80-120deg.C slowly and mixing them in a kettle continuously to be solved fully, then adding 4-6% inorganic alkali and dissolving them completely under the 60-80deg.C constant to the complete reaction, b, adding 8-10% sulfosalt while mixing, 1-2% polyalcohol under 40-60 deg.C constant to the complete reaction, c, adding 10-11% DBP to be dissolved fully under 30-50 deg.C to be cooled to normal temperature, d, spraying and drying them to powder particles then to be matched with 3-5% DBP and 9-11% silicon powder to get the basic material of high efficient mortar DBP. This invention also relates to its compound.

Description

technical field [0001] The invention relates to a mortar admixture, in particular to a high-efficiency mortar plasticizer base material and a preparation method thereof, and a high-efficiency mortar plasticizer composition. Background technique [0002] In industrial and civil construction projects, the application of masonry and plastering mortar is very common. Our country needs more than 1 billion cubic meters of construction mortar every year, 200-300 million tons of cement, and 100-200 million tons of lime paste. In order to meet the workability of mortar, in the past, it mainly relied on increasing the amount of cement by 20-30% or mixing lime paste with 30-100% of cement amount. As a result, the increase in cement amount and cost increased the mortar workability. , the use of lime paste will seriously pollute the construction site, causing cracks, hollowing, and falling off of the plastering mortar wall surface, which will affect the quality of the project; [0003] ...

AI Technical Summary

Problems solved by technology

In order to meet the workability of mortar, in the past, it mainly relied on increasing the amount of cement by 20-30% or mixing lime paste with 30-100% of cement amount. As a result, the increase in cement amount and cost increased the mortar workability. , the use of lime paste will seriously pollute the construction site, causing cracks, hollowing, and falling off of the plastering mortar wall surface, which will affect the quality of the project;

[0003] Since the 1980s, rosin thermal polymer air-entraining agent has been used instead of lime plaster in masonry and plastering mortar, which can significantly improve the workability of mortar, but its main function is to introduce a large number of pores with a diameter of 300-500μm. The air bubbles in the mortar, these large and many air bubbles slide between the mortar particles like balls during the mixing process of the mortar, which improves the workability of the mortar. up to 40-60%, causing serious damage to the quality of the project

[0004] Microfoam is used in mortar, the dosage is several parts per ten thousand to several parts per hundred thousand, and the measurement is very difficult. If the dosage is insufficient, the workability cannot be improved. If the dosage is too large, the strength of the mortar will drop too much, and the project quality will be seriously affected. On the other hand, the microfoam agent is a liquid, and the temperature in winter is low, so it needs to be heated and dissolved, otherwise it cannot be used, which will bring difficulties to the construction. Therefore, the promotion and use of the microfoam agent has been restricted by the construction management department in recent years.

[0005] At present, the mortar essence and mortar king appearing on the market can also replace lime plaster and improve the workability of mortar when used in construction. However, it is a modification of microfoam products, that is, it is changed from liquid to solid. , from a few parts per thousand to a few parts per thousand, it is easy to use, save, and does not pollute the environment, but its main mechanism is an air-entraining product, which also relies on introducing a large number of air bubbles into the mortar. Improve the workability of mortar, and its mortar strength will also decrease by 30-40% compared with the benchmark mortar strength, which cannot guarantee the quality of construction projects. Due to the decrease in strength, the only way to make up for the loss of strength is to increase the amount of cement

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